On 11/02/2013 19:53, Janko Mihelić wrote:
2013/2/11 Martin Koppenhoefer <[email protected] <mailto:[email protected]>> According to the proposal we would then need to know the exact voltage in order to distinguish between the various sizes of substations We could make a little tool that suggests voltages by the powerlines that end up near a substation. That would solve a majority of big substations.
Well, that seems like overkill to me. A manual inspection of the lines terminating at the substation should be sufficient (assuming their voltages have been tagged).
I have noticed that you can quite easy detect the voltages handled in the substation by measuring the distances between busbars (Bing imagery is mostly sufficient detailed to allow this). It requires that you know the standard voltages used in the given area but is otherwise a pretty reliable way of distinguishing voltages. I'm thinking about writing a wiki page explaining how to detect voltages and other features of power grids from aerial imagery.
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